Preventing terrorism has thus far been in the domain of national security and law enforcement agencies. The expectation that psychiatry has a primary role to play in the rehabilitation of those involved in terrorism remains controversial, although the significance of certain mental disorders has been highlighted among lone-actor terrorists. This paper provides an overview of the motivating factors for radicalization to terrorism at both community and individual levels, as well as preventive and rehabilitative approaches to terrorism. We argue that psychiatry may have a role to play in these approaches with the goal of preventing violence in select cases.